1 // SPDX-License-Identifier: GPL-2.0
4 #include <linux/kernel.h>
5 #include <traceevent/event-parse.h>
10 #include <sys/types.h>
23 #include "perf_regs.h"
27 #include "thread-stack.h"
28 #include "sample-raw.h"
30 #include "arch/common.h"
32 static int perf_session__deliver_event(struct perf_session *session,
33 union perf_event *event,
34 struct perf_tool *tool,
37 static int perf_session__open(struct perf_session *session)
39 struct perf_data *data = session->data;
41 if (perf_session__read_header(session) < 0) {
42 pr_err("incompatible file format (rerun with -v to learn more)\n");
46 if (perf_data__is_pipe(data))
49 if (perf_header__has_feat(&session->header, HEADER_STAT))
52 if (!perf_evlist__valid_sample_type(session->evlist)) {
53 pr_err("non matching sample_type\n");
57 if (!perf_evlist__valid_sample_id_all(session->evlist)) {
58 pr_err("non matching sample_id_all\n");
62 if (!perf_evlist__valid_read_format(session->evlist)) {
63 pr_err("non matching read_format\n");
70 void perf_session__set_id_hdr_size(struct perf_session *session)
72 u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
74 machines__set_id_hdr_size(&session->machines, id_hdr_size);
77 int perf_session__create_kernel_maps(struct perf_session *session)
79 int ret = machine__create_kernel_maps(&session->machines.host);
82 ret = machines__create_guest_kernel_maps(&session->machines);
86 static void perf_session__destroy_kernel_maps(struct perf_session *session)
88 machines__destroy_kernel_maps(&session->machines);
91 static bool perf_session__has_comm_exec(struct perf_session *session)
93 struct perf_evsel *evsel;
95 evlist__for_each_entry(session->evlist, evsel) {
96 if (evsel->attr.comm_exec)
103 static void perf_session__set_comm_exec(struct perf_session *session)
105 bool comm_exec = perf_session__has_comm_exec(session);
107 machines__set_comm_exec(&session->machines, comm_exec);
110 static int ordered_events__deliver_event(struct ordered_events *oe,
111 struct ordered_event *event)
113 struct perf_session *session = container_of(oe, struct perf_session,
116 return perf_session__deliver_event(session, event->event,
117 session->tool, event->file_offset);
120 struct perf_session *perf_session__new(struct perf_data *data,
121 bool repipe, struct perf_tool *tool)
123 struct perf_session *session = zalloc(sizeof(*session));
128 session->repipe = repipe;
129 session->tool = tool;
130 INIT_LIST_HEAD(&session->auxtrace_index);
131 machines__init(&session->machines);
132 ordered_events__init(&session->ordered_events,
133 ordered_events__deliver_event, NULL);
136 if (perf_data__open(data))
139 session->data = data;
141 if (perf_data__is_read(data)) {
142 if (perf_session__open(session) < 0)
146 * set session attributes that are present in perf.data
147 * but not in pipe-mode.
149 if (!data->is_pipe) {
150 perf_session__set_id_hdr_size(session);
151 perf_session__set_comm_exec(session);
154 perf_evlist__init_trace_event_sample_raw(session->evlist);
157 session->machines.host.env = &perf_env;
160 session->machines.host.single_address_space =
161 perf_env__single_address_space(session->machines.host.env);
163 if (!data || perf_data__is_write(data)) {
165 * In O_RDONLY mode this will be performed when reading the
166 * kernel MMAP event, in perf_event__process_mmap().
168 if (perf_session__create_kernel_maps(session) < 0)
169 pr_warning("Cannot read kernel map\n");
173 * In pipe-mode, evlist is empty until PERF_RECORD_HEADER_ATTR is
174 * processed, so perf_evlist__sample_id_all is not meaningful here.
176 if ((!data || !data->is_pipe) && tool && tool->ordering_requires_timestamps &&
177 tool->ordered_events && !perf_evlist__sample_id_all(session->evlist)) {
178 dump_printf("WARNING: No sample_id_all support, falling back to unordered processing\n");
179 tool->ordered_events = false;
185 perf_session__delete(session);
190 static void perf_session__delete_threads(struct perf_session *session)
192 machine__delete_threads(&session->machines.host);
195 void perf_session__delete(struct perf_session *session)
199 auxtrace__free(session);
200 auxtrace_index__free(&session->auxtrace_index);
201 perf_session__destroy_kernel_maps(session);
202 perf_session__delete_threads(session);
203 perf_env__exit(&session->header.env);
204 machines__exit(&session->machines);
206 perf_data__close(session->data);
210 static int process_event_synth_tracing_data_stub(struct perf_session *session
212 union perf_event *event
215 dump_printf(": unhandled!\n");
219 static int process_event_synth_attr_stub(struct perf_tool *tool __maybe_unused,
220 union perf_event *event __maybe_unused,
221 struct perf_evlist **pevlist
224 dump_printf(": unhandled!\n");
228 static int process_event_synth_event_update_stub(struct perf_tool *tool __maybe_unused,
229 union perf_event *event __maybe_unused,
230 struct perf_evlist **pevlist
234 perf_event__fprintf_event_update(event, stdout);
236 dump_printf(": unhandled!\n");
240 static int process_event_sample_stub(struct perf_tool *tool __maybe_unused,
241 union perf_event *event __maybe_unused,
242 struct perf_sample *sample __maybe_unused,
243 struct perf_evsel *evsel __maybe_unused,
244 struct machine *machine __maybe_unused)
246 dump_printf(": unhandled!\n");
250 static int process_event_stub(struct perf_tool *tool __maybe_unused,
251 union perf_event *event __maybe_unused,
252 struct perf_sample *sample __maybe_unused,
253 struct machine *machine __maybe_unused)
255 dump_printf(": unhandled!\n");
259 static int process_finished_round_stub(struct perf_tool *tool __maybe_unused,
260 union perf_event *event __maybe_unused,
261 struct ordered_events *oe __maybe_unused)
263 dump_printf(": unhandled!\n");
267 static int process_finished_round(struct perf_tool *tool,
268 union perf_event *event,
269 struct ordered_events *oe);
271 static int skipn(int fd, off_t n)
277 ret = read(fd, buf, min(n, (off_t)sizeof(buf)));
286 static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused,
287 union perf_event *event)
289 dump_printf(": unhandled!\n");
290 if (perf_data__is_pipe(session->data))
291 skipn(perf_data__fd(session->data), event->auxtrace.size);
292 return event->auxtrace.size;
295 static int process_event_op2_stub(struct perf_session *session __maybe_unused,
296 union perf_event *event __maybe_unused)
298 dump_printf(": unhandled!\n");
304 int process_event_thread_map_stub(struct perf_session *session __maybe_unused,
305 union perf_event *event __maybe_unused)
308 perf_event__fprintf_thread_map(event, stdout);
310 dump_printf(": unhandled!\n");
315 int process_event_cpu_map_stub(struct perf_session *session __maybe_unused,
316 union perf_event *event __maybe_unused)
319 perf_event__fprintf_cpu_map(event, stdout);
321 dump_printf(": unhandled!\n");
326 int process_event_stat_config_stub(struct perf_session *session __maybe_unused,
327 union perf_event *event __maybe_unused)
330 perf_event__fprintf_stat_config(event, stdout);
332 dump_printf(": unhandled!\n");
336 static int process_stat_stub(struct perf_session *perf_session __maybe_unused,
337 union perf_event *event)
340 perf_event__fprintf_stat(event, stdout);
342 dump_printf(": unhandled!\n");
346 static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused,
347 union perf_event *event)
350 perf_event__fprintf_stat_round(event, stdout);
352 dump_printf(": unhandled!\n");
356 void perf_tool__fill_defaults(struct perf_tool *tool)
358 if (tool->sample == NULL)
359 tool->sample = process_event_sample_stub;
360 if (tool->mmap == NULL)
361 tool->mmap = process_event_stub;
362 if (tool->mmap2 == NULL)
363 tool->mmap2 = process_event_stub;
364 if (tool->comm == NULL)
365 tool->comm = process_event_stub;
366 if (tool->namespaces == NULL)
367 tool->namespaces = process_event_stub;
368 if (tool->fork == NULL)
369 tool->fork = process_event_stub;
370 if (tool->exit == NULL)
371 tool->exit = process_event_stub;
372 if (tool->lost == NULL)
373 tool->lost = perf_event__process_lost;
374 if (tool->lost_samples == NULL)
375 tool->lost_samples = perf_event__process_lost_samples;
376 if (tool->aux == NULL)
377 tool->aux = perf_event__process_aux;
378 if (tool->itrace_start == NULL)
379 tool->itrace_start = perf_event__process_itrace_start;
380 if (tool->context_switch == NULL)
381 tool->context_switch = perf_event__process_switch;
382 if (tool->ksymbol == NULL)
383 tool->ksymbol = perf_event__process_ksymbol;
384 if (tool->bpf_event == NULL)
385 tool->bpf_event = perf_event__process_bpf_event;
386 if (tool->read == NULL)
387 tool->read = process_event_sample_stub;
388 if (tool->throttle == NULL)
389 tool->throttle = process_event_stub;
390 if (tool->unthrottle == NULL)
391 tool->unthrottle = process_event_stub;
392 if (tool->attr == NULL)
393 tool->attr = process_event_synth_attr_stub;
394 if (tool->event_update == NULL)
395 tool->event_update = process_event_synth_event_update_stub;
396 if (tool->tracing_data == NULL)
397 tool->tracing_data = process_event_synth_tracing_data_stub;
398 if (tool->build_id == NULL)
399 tool->build_id = process_event_op2_stub;
400 if (tool->finished_round == NULL) {
401 if (tool->ordered_events)
402 tool->finished_round = process_finished_round;
404 tool->finished_round = process_finished_round_stub;
406 if (tool->id_index == NULL)
407 tool->id_index = process_event_op2_stub;
408 if (tool->auxtrace_info == NULL)
409 tool->auxtrace_info = process_event_op2_stub;
410 if (tool->auxtrace == NULL)
411 tool->auxtrace = process_event_auxtrace_stub;
412 if (tool->auxtrace_error == NULL)
413 tool->auxtrace_error = process_event_op2_stub;
414 if (tool->thread_map == NULL)
415 tool->thread_map = process_event_thread_map_stub;
416 if (tool->cpu_map == NULL)
417 tool->cpu_map = process_event_cpu_map_stub;
418 if (tool->stat_config == NULL)
419 tool->stat_config = process_event_stat_config_stub;
420 if (tool->stat == NULL)
421 tool->stat = process_stat_stub;
422 if (tool->stat_round == NULL)
423 tool->stat_round = process_stat_round_stub;
424 if (tool->time_conv == NULL)
425 tool->time_conv = process_event_op2_stub;
426 if (tool->feature == NULL)
427 tool->feature = process_event_op2_stub;
430 static void swap_sample_id_all(union perf_event *event, void *data)
432 void *end = (void *) event + event->header.size;
433 int size = end - data;
435 BUG_ON(size % sizeof(u64));
436 mem_bswap_64(data, size);
439 static void perf_event__all64_swap(union perf_event *event,
440 bool sample_id_all __maybe_unused)
442 struct perf_event_header *hdr = &event->header;
443 mem_bswap_64(hdr + 1, event->header.size - sizeof(*hdr));
446 static void perf_event__comm_swap(union perf_event *event, bool sample_id_all)
448 event->comm.pid = bswap_32(event->comm.pid);
449 event->comm.tid = bswap_32(event->comm.tid);
452 void *data = &event->comm.comm;
454 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
455 swap_sample_id_all(event, data);
459 static void perf_event__mmap_swap(union perf_event *event,
462 event->mmap.pid = bswap_32(event->mmap.pid);
463 event->mmap.tid = bswap_32(event->mmap.tid);
464 event->mmap.start = bswap_64(event->mmap.start);
465 event->mmap.len = bswap_64(event->mmap.len);
466 event->mmap.pgoff = bswap_64(event->mmap.pgoff);
469 void *data = &event->mmap.filename;
471 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
472 swap_sample_id_all(event, data);
476 static void perf_event__mmap2_swap(union perf_event *event,
479 event->mmap2.pid = bswap_32(event->mmap2.pid);
480 event->mmap2.tid = bswap_32(event->mmap2.tid);
481 event->mmap2.start = bswap_64(event->mmap2.start);
482 event->mmap2.len = bswap_64(event->mmap2.len);
483 event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
484 event->mmap2.maj = bswap_32(event->mmap2.maj);
485 event->mmap2.min = bswap_32(event->mmap2.min);
486 event->mmap2.ino = bswap_64(event->mmap2.ino);
489 void *data = &event->mmap2.filename;
491 data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
492 swap_sample_id_all(event, data);
495 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
497 event->fork.pid = bswap_32(event->fork.pid);
498 event->fork.tid = bswap_32(event->fork.tid);
499 event->fork.ppid = bswap_32(event->fork.ppid);
500 event->fork.ptid = bswap_32(event->fork.ptid);
501 event->fork.time = bswap_64(event->fork.time);
504 swap_sample_id_all(event, &event->fork + 1);
507 static void perf_event__read_swap(union perf_event *event, bool sample_id_all)
509 event->read.pid = bswap_32(event->read.pid);
510 event->read.tid = bswap_32(event->read.tid);
511 event->read.value = bswap_64(event->read.value);
512 event->read.time_enabled = bswap_64(event->read.time_enabled);
513 event->read.time_running = bswap_64(event->read.time_running);
514 event->read.id = bswap_64(event->read.id);
517 swap_sample_id_all(event, &event->read + 1);
520 static void perf_event__aux_swap(union perf_event *event, bool sample_id_all)
522 event->aux.aux_offset = bswap_64(event->aux.aux_offset);
523 event->aux.aux_size = bswap_64(event->aux.aux_size);
524 event->aux.flags = bswap_64(event->aux.flags);
527 swap_sample_id_all(event, &event->aux + 1);
530 static void perf_event__itrace_start_swap(union perf_event *event,
533 event->itrace_start.pid = bswap_32(event->itrace_start.pid);
534 event->itrace_start.tid = bswap_32(event->itrace_start.tid);
537 swap_sample_id_all(event, &event->itrace_start + 1);
540 static void perf_event__switch_swap(union perf_event *event, bool sample_id_all)
542 if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
543 event->context_switch.next_prev_pid =
544 bswap_32(event->context_switch.next_prev_pid);
545 event->context_switch.next_prev_tid =
546 bswap_32(event->context_switch.next_prev_tid);
550 swap_sample_id_all(event, &event->context_switch + 1);
553 static void perf_event__throttle_swap(union perf_event *event,
556 event->throttle.time = bswap_64(event->throttle.time);
557 event->throttle.id = bswap_64(event->throttle.id);
558 event->throttle.stream_id = bswap_64(event->throttle.stream_id);
561 swap_sample_id_all(event, &event->throttle + 1);
564 static u8 revbyte(u8 b)
566 int rev = (b >> 4) | ((b & 0xf) << 4);
567 rev = ((rev & 0xcc) >> 2) | ((rev & 0x33) << 2);
568 rev = ((rev & 0xaa) >> 1) | ((rev & 0x55) << 1);
573 * XXX this is hack in attempt to carry flags bitfield
574 * through endian village. ABI says:
576 * Bit-fields are allocated from right to left (least to most significant)
577 * on little-endian implementations and from left to right (most to least
578 * significant) on big-endian implementations.
580 * The above seems to be byte specific, so we need to reverse each
581 * byte of the bitfield. 'Internet' also says this might be implementation
582 * specific and we probably need proper fix and carry perf_event_attr
583 * bitfield flags in separate data file FEAT_ section. Thought this seems
586 static void swap_bitfield(u8 *p, unsigned len)
590 for (i = 0; i < len; i++) {
596 /* exported for swapping attributes in file header */
597 void perf_event__attr_swap(struct perf_event_attr *attr)
599 attr->type = bswap_32(attr->type);
600 attr->size = bswap_32(attr->size);
602 #define bswap_safe(f, n) \
603 (attr->size > (offsetof(struct perf_event_attr, f) + \
604 sizeof(attr->f) * (n)))
605 #define bswap_field(f, sz) \
607 if (bswap_safe(f, 0)) \
608 attr->f = bswap_##sz(attr->f); \
610 #define bswap_field_16(f) bswap_field(f, 16)
611 #define bswap_field_32(f) bswap_field(f, 32)
612 #define bswap_field_64(f) bswap_field(f, 64)
614 bswap_field_64(config);
615 bswap_field_64(sample_period);
616 bswap_field_64(sample_type);
617 bswap_field_64(read_format);
618 bswap_field_32(wakeup_events);
619 bswap_field_32(bp_type);
620 bswap_field_64(bp_addr);
621 bswap_field_64(bp_len);
622 bswap_field_64(branch_sample_type);
623 bswap_field_64(sample_regs_user);
624 bswap_field_32(sample_stack_user);
625 bswap_field_32(aux_watermark);
626 bswap_field_16(sample_max_stack);
629 * After read_format are bitfields. Check read_format because
630 * we are unable to use offsetof on bitfield.
632 if (bswap_safe(read_format, 1))
633 swap_bitfield((u8 *) (&attr->read_format + 1),
635 #undef bswap_field_64
636 #undef bswap_field_32
641 static void perf_event__hdr_attr_swap(union perf_event *event,
642 bool sample_id_all __maybe_unused)
646 perf_event__attr_swap(&event->attr.attr);
648 size = event->header.size;
649 size -= (void *)&event->attr.id - (void *)event;
650 mem_bswap_64(event->attr.id, size);
653 static void perf_event__event_update_swap(union perf_event *event,
654 bool sample_id_all __maybe_unused)
656 event->event_update.type = bswap_64(event->event_update.type);
657 event->event_update.id = bswap_64(event->event_update.id);
660 static void perf_event__event_type_swap(union perf_event *event,
661 bool sample_id_all __maybe_unused)
663 event->event_type.event_type.event_id =
664 bswap_64(event->event_type.event_type.event_id);
667 static void perf_event__tracing_data_swap(union perf_event *event,
668 bool sample_id_all __maybe_unused)
670 event->tracing_data.size = bswap_32(event->tracing_data.size);
673 static void perf_event__auxtrace_info_swap(union perf_event *event,
674 bool sample_id_all __maybe_unused)
678 event->auxtrace_info.type = bswap_32(event->auxtrace_info.type);
680 size = event->header.size;
681 size -= (void *)&event->auxtrace_info.priv - (void *)event;
682 mem_bswap_64(event->auxtrace_info.priv, size);
685 static void perf_event__auxtrace_swap(union perf_event *event,
686 bool sample_id_all __maybe_unused)
688 event->auxtrace.size = bswap_64(event->auxtrace.size);
689 event->auxtrace.offset = bswap_64(event->auxtrace.offset);
690 event->auxtrace.reference = bswap_64(event->auxtrace.reference);
691 event->auxtrace.idx = bswap_32(event->auxtrace.idx);
692 event->auxtrace.tid = bswap_32(event->auxtrace.tid);
693 event->auxtrace.cpu = bswap_32(event->auxtrace.cpu);
696 static void perf_event__auxtrace_error_swap(union perf_event *event,
697 bool sample_id_all __maybe_unused)
699 event->auxtrace_error.type = bswap_32(event->auxtrace_error.type);
700 event->auxtrace_error.code = bswap_32(event->auxtrace_error.code);
701 event->auxtrace_error.cpu = bswap_32(event->auxtrace_error.cpu);
702 event->auxtrace_error.pid = bswap_32(event->auxtrace_error.pid);
703 event->auxtrace_error.tid = bswap_32(event->auxtrace_error.tid);
704 event->auxtrace_error.fmt = bswap_32(event->auxtrace_error.fmt);
705 event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip);
706 if (event->auxtrace_error.fmt)
707 event->auxtrace_error.time = bswap_64(event->auxtrace_error.time);
710 static void perf_event__thread_map_swap(union perf_event *event,
711 bool sample_id_all __maybe_unused)
715 event->thread_map.nr = bswap_64(event->thread_map.nr);
717 for (i = 0; i < event->thread_map.nr; i++)
718 event->thread_map.entries[i].pid = bswap_64(event->thread_map.entries[i].pid);
721 static void perf_event__cpu_map_swap(union perf_event *event,
722 bool sample_id_all __maybe_unused)
724 struct cpu_map_data *data = &event->cpu_map.data;
725 struct cpu_map_entries *cpus;
726 struct cpu_map_mask *mask;
729 data->type = bswap_64(data->type);
731 switch (data->type) {
732 case PERF_CPU_MAP__CPUS:
733 cpus = (struct cpu_map_entries *)data->data;
735 cpus->nr = bswap_16(cpus->nr);
737 for (i = 0; i < cpus->nr; i++)
738 cpus->cpu[i] = bswap_16(cpus->cpu[i]);
740 case PERF_CPU_MAP__MASK:
741 mask = (struct cpu_map_mask *) data->data;
743 mask->nr = bswap_16(mask->nr);
744 mask->long_size = bswap_16(mask->long_size);
746 switch (mask->long_size) {
747 case 4: mem_bswap_32(&mask->mask, mask->nr); break;
748 case 8: mem_bswap_64(&mask->mask, mask->nr); break;
750 pr_err("cpu_map swap: unsupported long size\n");
757 static void perf_event__stat_config_swap(union perf_event *event,
758 bool sample_id_all __maybe_unused)
762 size = event->stat_config.nr * sizeof(event->stat_config.data[0]);
763 size += 1; /* nr item itself */
764 mem_bswap_64(&event->stat_config.nr, size);
767 static void perf_event__stat_swap(union perf_event *event,
768 bool sample_id_all __maybe_unused)
770 event->stat.id = bswap_64(event->stat.id);
771 event->stat.thread = bswap_32(event->stat.thread);
772 event->stat.cpu = bswap_32(event->stat.cpu);
773 event->stat.val = bswap_64(event->stat.val);
774 event->stat.ena = bswap_64(event->stat.ena);
775 event->stat.run = bswap_64(event->stat.run);
778 static void perf_event__stat_round_swap(union perf_event *event,
779 bool sample_id_all __maybe_unused)
781 event->stat_round.type = bswap_64(event->stat_round.type);
782 event->stat_round.time = bswap_64(event->stat_round.time);
785 typedef void (*perf_event__swap_op)(union perf_event *event,
788 static perf_event__swap_op perf_event__swap_ops[] = {
789 [PERF_RECORD_MMAP] = perf_event__mmap_swap,
790 [PERF_RECORD_MMAP2] = perf_event__mmap2_swap,
791 [PERF_RECORD_COMM] = perf_event__comm_swap,
792 [PERF_RECORD_FORK] = perf_event__task_swap,
793 [PERF_RECORD_EXIT] = perf_event__task_swap,
794 [PERF_RECORD_LOST] = perf_event__all64_swap,
795 [PERF_RECORD_READ] = perf_event__read_swap,
796 [PERF_RECORD_THROTTLE] = perf_event__throttle_swap,
797 [PERF_RECORD_UNTHROTTLE] = perf_event__throttle_swap,
798 [PERF_RECORD_SAMPLE] = perf_event__all64_swap,
799 [PERF_RECORD_AUX] = perf_event__aux_swap,
800 [PERF_RECORD_ITRACE_START] = perf_event__itrace_start_swap,
801 [PERF_RECORD_LOST_SAMPLES] = perf_event__all64_swap,
802 [PERF_RECORD_SWITCH] = perf_event__switch_swap,
803 [PERF_RECORD_SWITCH_CPU_WIDE] = perf_event__switch_swap,
804 [PERF_RECORD_HEADER_ATTR] = perf_event__hdr_attr_swap,
805 [PERF_RECORD_HEADER_EVENT_TYPE] = perf_event__event_type_swap,
806 [PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,
807 [PERF_RECORD_HEADER_BUILD_ID] = NULL,
808 [PERF_RECORD_ID_INDEX] = perf_event__all64_swap,
809 [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap,
810 [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap,
811 [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap,
812 [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
813 [PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
814 [PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
815 [PERF_RECORD_STAT] = perf_event__stat_swap,
816 [PERF_RECORD_STAT_ROUND] = perf_event__stat_round_swap,
817 [PERF_RECORD_EVENT_UPDATE] = perf_event__event_update_swap,
818 [PERF_RECORD_TIME_CONV] = perf_event__all64_swap,
819 [PERF_RECORD_HEADER_MAX] = NULL,
823 * When perf record finishes a pass on every buffers, it records this pseudo
825 * We record the max timestamp t found in the pass n.
826 * Assuming these timestamps are monotonic across cpus, we know that if
827 * a buffer still has events with timestamps below t, they will be all
828 * available and then read in the pass n + 1.
829 * Hence when we start to read the pass n + 2, we can safely flush every
830 * events with timestamps below t.
832 * ============ PASS n =================
835 * cnt1 timestamps | cnt2 timestamps
838 * - | 4 <--- max recorded
840 * ============ PASS n + 1 ==============
843 * cnt1 timestamps | cnt2 timestamps
846 * 5 | 7 <---- max recorded
848 * Flush every events below timestamp 4
850 * ============ PASS n + 2 ==============
853 * cnt1 timestamps | cnt2 timestamps
858 * Flush every events below timestamp 7
861 static int process_finished_round(struct perf_tool *tool __maybe_unused,
862 union perf_event *event __maybe_unused,
863 struct ordered_events *oe)
866 fprintf(stdout, "\n");
867 return ordered_events__flush(oe, OE_FLUSH__ROUND);
870 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
871 u64 timestamp, u64 file_offset)
873 return ordered_events__queue(&s->ordered_events, event, timestamp, file_offset);
876 static void callchain__lbr_callstack_printf(struct perf_sample *sample)
878 struct ip_callchain *callchain = sample->callchain;
879 struct branch_stack *lbr_stack = sample->branch_stack;
880 u64 kernel_callchain_nr = callchain->nr;
883 for (i = 0; i < kernel_callchain_nr; i++) {
884 if (callchain->ips[i] == PERF_CONTEXT_USER)
888 if ((i != kernel_callchain_nr) && lbr_stack->nr) {
891 * LBR callstack can only get user call chain,
892 * i is kernel call chain number,
893 * 1 is PERF_CONTEXT_USER.
895 * The user call chain is stored in LBR registers.
896 * LBR are pair registers. The caller is stored
897 * in "from" register, while the callee is stored
899 * For example, there is a call stack
900 * "A"->"B"->"C"->"D".
901 * The LBR registers will recorde like
902 * "C"->"D", "B"->"C", "A"->"B".
903 * So only the first "to" register and all "from"
904 * registers are needed to construct the whole stack.
906 total_nr = i + 1 + lbr_stack->nr + 1;
907 kernel_callchain_nr = i + 1;
909 printf("... LBR call chain: nr:%" PRIu64 "\n", total_nr);
911 for (i = 0; i < kernel_callchain_nr; i++)
912 printf("..... %2d: %016" PRIx64 "\n",
913 i, callchain->ips[i]);
915 printf("..... %2d: %016" PRIx64 "\n",
916 (int)(kernel_callchain_nr), lbr_stack->entries[0].to);
917 for (i = 0; i < lbr_stack->nr; i++)
918 printf("..... %2d: %016" PRIx64 "\n",
919 (int)(i + kernel_callchain_nr + 1), lbr_stack->entries[i].from);
923 static void callchain__printf(struct perf_evsel *evsel,
924 struct perf_sample *sample)
927 struct ip_callchain *callchain = sample->callchain;
929 if (perf_evsel__has_branch_callstack(evsel))
930 callchain__lbr_callstack_printf(sample);
932 printf("... FP chain: nr:%" PRIu64 "\n", callchain->nr);
934 for (i = 0; i < callchain->nr; i++)
935 printf("..... %2d: %016" PRIx64 "\n",
936 i, callchain->ips[i]);
939 static void branch_stack__printf(struct perf_sample *sample)
943 printf("... branch stack: nr:%" PRIu64 "\n", sample->branch_stack->nr);
945 for (i = 0; i < sample->branch_stack->nr; i++) {
946 struct branch_entry *e = &sample->branch_stack->entries[i];
948 printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x\n",
950 (unsigned short)e->flags.cycles,
951 e->flags.mispred ? "M" : " ",
952 e->flags.predicted ? "P" : " ",
953 e->flags.abort ? "A" : " ",
954 e->flags.in_tx ? "T" : " ",
955 (unsigned)e->flags.reserved);
959 static void regs_dump__printf(u64 mask, u64 *regs)
963 for_each_set_bit(rid, (unsigned long *) &mask, sizeof(mask) * 8) {
966 printf(".... %-5s 0x%" PRIx64 "\n",
967 perf_reg_name(rid), val);
971 static const char *regs_abi[] = {
972 [PERF_SAMPLE_REGS_ABI_NONE] = "none",
973 [PERF_SAMPLE_REGS_ABI_32] = "32-bit",
974 [PERF_SAMPLE_REGS_ABI_64] = "64-bit",
977 static inline const char *regs_dump_abi(struct regs_dump *d)
979 if (d->abi > PERF_SAMPLE_REGS_ABI_64)
982 return regs_abi[d->abi];
985 static void regs__printf(const char *type, struct regs_dump *regs)
987 u64 mask = regs->mask;
989 printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
992 regs_dump_abi(regs));
994 regs_dump__printf(mask, regs->regs);
997 static void regs_user__printf(struct perf_sample *sample)
999 struct regs_dump *user_regs = &sample->user_regs;
1001 if (user_regs->regs)
1002 regs__printf("user", user_regs);
1005 static void regs_intr__printf(struct perf_sample *sample)
1007 struct regs_dump *intr_regs = &sample->intr_regs;
1009 if (intr_regs->regs)
1010 regs__printf("intr", intr_regs);
1013 static void stack_user__printf(struct stack_dump *dump)
1015 printf("... ustack: size %" PRIu64 ", offset 0x%x\n",
1016 dump->size, dump->offset);
1019 static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
1020 union perf_event *event,
1021 struct perf_sample *sample)
1023 u64 sample_type = __perf_evlist__combined_sample_type(evlist);
1025 if (event->header.type != PERF_RECORD_SAMPLE &&
1026 !perf_evlist__sample_id_all(evlist)) {
1027 fputs("-1 -1 ", stdout);
1031 if ((sample_type & PERF_SAMPLE_CPU))
1032 printf("%u ", sample->cpu);
1034 if (sample_type & PERF_SAMPLE_TIME)
1035 printf("%" PRIu64 " ", sample->time);
1038 static void sample_read__printf(struct perf_sample *sample, u64 read_format)
1040 printf("... sample_read:\n");
1042 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1043 printf("...... time enabled %016" PRIx64 "\n",
1044 sample->read.time_enabled);
1046 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1047 printf("...... time running %016" PRIx64 "\n",
1048 sample->read.time_running);
1050 if (read_format & PERF_FORMAT_GROUP) {
1053 printf(".... group nr %" PRIu64 "\n", sample->read.group.nr);
1055 for (i = 0; i < sample->read.group.nr; i++) {
1056 struct sample_read_value *value;
1058 value = &sample->read.group.values[i];
1059 printf("..... id %016" PRIx64
1060 ", value %016" PRIx64 "\n",
1061 value->id, value->value);
1064 printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
1065 sample->read.one.id, sample->read.one.value);
1068 static void dump_event(struct perf_evlist *evlist, union perf_event *event,
1069 u64 file_offset, struct perf_sample *sample)
1074 printf("\n%#" PRIx64 " [%#x]: event: %d\n",
1075 file_offset, event->header.size, event->header.type);
1078 if (event->header.type == PERF_RECORD_SAMPLE && evlist->trace_event_sample_raw)
1079 evlist->trace_event_sample_raw(evlist, event, sample);
1082 perf_evlist__print_tstamp(evlist, event, sample);
1084 printf("%#" PRIx64 " [%#x]: PERF_RECORD_%s", file_offset,
1085 event->header.size, perf_event__name(event->header.type));
1088 static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
1089 struct perf_sample *sample)
1096 printf("(IP, 0x%x): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
1097 event->header.misc, sample->pid, sample->tid, sample->ip,
1098 sample->period, sample->addr);
1100 sample_type = evsel->attr.sample_type;
1102 if (evsel__has_callchain(evsel))
1103 callchain__printf(evsel, sample);
1105 if ((sample_type & PERF_SAMPLE_BRANCH_STACK) && !perf_evsel__has_branch_callstack(evsel))
1106 branch_stack__printf(sample);
1108 if (sample_type & PERF_SAMPLE_REGS_USER)
1109 regs_user__printf(sample);
1111 if (sample_type & PERF_SAMPLE_REGS_INTR)
1112 regs_intr__printf(sample);
1114 if (sample_type & PERF_SAMPLE_STACK_USER)
1115 stack_user__printf(&sample->user_stack);
1117 if (sample_type & PERF_SAMPLE_WEIGHT)
1118 printf("... weight: %" PRIu64 "\n", sample->weight);
1120 if (sample_type & PERF_SAMPLE_DATA_SRC)
1121 printf(" . data_src: 0x%"PRIx64"\n", sample->data_src);
1123 if (sample_type & PERF_SAMPLE_PHYS_ADDR)
1124 printf(" .. phys_addr: 0x%"PRIx64"\n", sample->phys_addr);
1126 if (sample_type & PERF_SAMPLE_TRANSACTION)
1127 printf("... transaction: %" PRIx64 "\n", sample->transaction);
1129 if (sample_type & PERF_SAMPLE_READ)
1130 sample_read__printf(sample, evsel->attr.read_format);
1133 static void dump_read(struct perf_evsel *evsel, union perf_event *event)
1135 struct read_event *read_event = &event->read;
1141 printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
1142 evsel ? perf_evsel__name(evsel) : "FAIL",
1145 read_format = evsel->attr.read_format;
1147 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
1148 printf("... time enabled : %" PRIu64 "\n", read_event->time_enabled);
1150 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
1151 printf("... time running : %" PRIu64 "\n", read_event->time_running);
1153 if (read_format & PERF_FORMAT_ID)
1154 printf("... id : %" PRIu64 "\n", read_event->id);
1157 static struct machine *machines__find_for_cpumode(struct machines *machines,
1158 union perf_event *event,
1159 struct perf_sample *sample)
1161 struct machine *machine;
1164 ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
1165 (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
1168 if (event->header.type == PERF_RECORD_MMAP
1169 || event->header.type == PERF_RECORD_MMAP2)
1170 pid = event->mmap.pid;
1174 machine = machines__find(machines, pid);
1176 machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
1180 return &machines->host;
1183 static int deliver_sample_value(struct perf_evlist *evlist,
1184 struct perf_tool *tool,
1185 union perf_event *event,
1186 struct perf_sample *sample,
1187 struct sample_read_value *v,
1188 struct machine *machine)
1190 struct perf_sample_id *sid = perf_evlist__id2sid(evlist, v->id);
1194 sample->period = v->value - sid->period;
1195 sid->period = v->value;
1198 if (!sid || sid->evsel == NULL) {
1199 ++evlist->stats.nr_unknown_id;
1204 * There's no reason to deliver sample
1205 * for zero period, bail out.
1207 if (!sample->period)
1210 return tool->sample(tool, event, sample, sid->evsel, machine);
1213 static int deliver_sample_group(struct perf_evlist *evlist,
1214 struct perf_tool *tool,
1215 union perf_event *event,
1216 struct perf_sample *sample,
1217 struct machine *machine)
1222 for (i = 0; i < sample->read.group.nr; i++) {
1223 ret = deliver_sample_value(evlist, tool, event, sample,
1224 &sample->read.group.values[i],
1234 perf_evlist__deliver_sample(struct perf_evlist *evlist,
1235 struct perf_tool *tool,
1236 union perf_event *event,
1237 struct perf_sample *sample,
1238 struct perf_evsel *evsel,
1239 struct machine *machine)
1241 /* We know evsel != NULL. */
1242 u64 sample_type = evsel->attr.sample_type;
1243 u64 read_format = evsel->attr.read_format;
1245 /* Standard sample delivery. */
1246 if (!(sample_type & PERF_SAMPLE_READ))
1247 return tool->sample(tool, event, sample, evsel, machine);
1249 /* For PERF_SAMPLE_READ we have either single or group mode. */
1250 if (read_format & PERF_FORMAT_GROUP)
1251 return deliver_sample_group(evlist, tool, event, sample,
1254 return deliver_sample_value(evlist, tool, event, sample,
1255 &sample->read.one, machine);
1258 static int machines__deliver_event(struct machines *machines,
1259 struct perf_evlist *evlist,
1260 union perf_event *event,
1261 struct perf_sample *sample,
1262 struct perf_tool *tool, u64 file_offset)
1264 struct perf_evsel *evsel;
1265 struct machine *machine;
1267 dump_event(evlist, event, file_offset, sample);
1269 evsel = perf_evlist__id2evsel(evlist, sample->id);
1271 machine = machines__find_for_cpumode(machines, event, sample);
1273 switch (event->header.type) {
1274 case PERF_RECORD_SAMPLE:
1275 if (evsel == NULL) {
1276 ++evlist->stats.nr_unknown_id;
1279 dump_sample(evsel, event, sample);
1280 if (machine == NULL) {
1281 ++evlist->stats.nr_unprocessable_samples;
1284 return perf_evlist__deliver_sample(evlist, tool, event, sample, evsel, machine);
1285 case PERF_RECORD_MMAP:
1286 return tool->mmap(tool, event, sample, machine);
1287 case PERF_RECORD_MMAP2:
1288 if (event->header.misc & PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT)
1289 ++evlist->stats.nr_proc_map_timeout;
1290 return tool->mmap2(tool, event, sample, machine);
1291 case PERF_RECORD_COMM:
1292 return tool->comm(tool, event, sample, machine);
1293 case PERF_RECORD_NAMESPACES:
1294 return tool->namespaces(tool, event, sample, machine);
1295 case PERF_RECORD_FORK:
1296 return tool->fork(tool, event, sample, machine);
1297 case PERF_RECORD_EXIT:
1298 return tool->exit(tool, event, sample, machine);
1299 case PERF_RECORD_LOST:
1300 if (tool->lost == perf_event__process_lost)
1301 evlist->stats.total_lost += event->lost.lost;
1302 return tool->lost(tool, event, sample, machine);
1303 case PERF_RECORD_LOST_SAMPLES:
1304 if (tool->lost_samples == perf_event__process_lost_samples)
1305 evlist->stats.total_lost_samples += event->lost_samples.lost;
1306 return tool->lost_samples(tool, event, sample, machine);
1307 case PERF_RECORD_READ:
1308 dump_read(evsel, event);
1309 return tool->read(tool, event, sample, evsel, machine);
1310 case PERF_RECORD_THROTTLE:
1311 return tool->throttle(tool, event, sample, machine);
1312 case PERF_RECORD_UNTHROTTLE:
1313 return tool->unthrottle(tool, event, sample, machine);
1314 case PERF_RECORD_AUX:
1315 if (tool->aux == perf_event__process_aux) {
1316 if (event->aux.flags & PERF_AUX_FLAG_TRUNCATED)
1317 evlist->stats.total_aux_lost += 1;
1318 if (event->aux.flags & PERF_AUX_FLAG_PARTIAL)
1319 evlist->stats.total_aux_partial += 1;
1321 return tool->aux(tool, event, sample, machine);
1322 case PERF_RECORD_ITRACE_START:
1323 return tool->itrace_start(tool, event, sample, machine);
1324 case PERF_RECORD_SWITCH:
1325 case PERF_RECORD_SWITCH_CPU_WIDE:
1326 return tool->context_switch(tool, event, sample, machine);
1327 case PERF_RECORD_KSYMBOL:
1328 return tool->ksymbol(tool, event, sample, machine);
1329 case PERF_RECORD_BPF_EVENT:
1330 return tool->bpf_event(tool, event, sample, machine);
1332 ++evlist->stats.nr_unknown_events;
1337 static int perf_session__deliver_event(struct perf_session *session,
1338 union perf_event *event,
1339 struct perf_tool *tool,
1342 struct perf_sample sample;
1345 ret = perf_evlist__parse_sample(session->evlist, event, &sample);
1347 pr_err("Can't parse sample, err = %d\n", ret);
1351 ret = auxtrace__process_event(session, event, &sample, tool);
1357 return machines__deliver_event(&session->machines, session->evlist,
1358 event, &sample, tool, file_offset);
1361 static s64 perf_session__process_user_event(struct perf_session *session,
1362 union perf_event *event,
1365 struct ordered_events *oe = &session->ordered_events;
1366 struct perf_tool *tool = session->tool;
1367 struct perf_sample sample = { .time = 0, };
1368 int fd = perf_data__fd(session->data);
1371 dump_event(session->evlist, event, file_offset, &sample);
1373 /* These events are processed right away */
1374 switch (event->header.type) {
1375 case PERF_RECORD_HEADER_ATTR:
1376 err = tool->attr(tool, event, &session->evlist);
1378 perf_session__set_id_hdr_size(session);
1379 perf_session__set_comm_exec(session);
1382 case PERF_RECORD_EVENT_UPDATE:
1383 return tool->event_update(tool, event, &session->evlist);
1384 case PERF_RECORD_HEADER_EVENT_TYPE:
1386 * Depreceated, but we need to handle it for sake
1387 * of old data files create in pipe mode.
1390 case PERF_RECORD_HEADER_TRACING_DATA:
1391 /* setup for reading amidst mmap */
1392 lseek(fd, file_offset, SEEK_SET);
1393 return tool->tracing_data(session, event);
1394 case PERF_RECORD_HEADER_BUILD_ID:
1395 return tool->build_id(session, event);
1396 case PERF_RECORD_FINISHED_ROUND:
1397 return tool->finished_round(tool, event, oe);
1398 case PERF_RECORD_ID_INDEX:
1399 return tool->id_index(session, event);
1400 case PERF_RECORD_AUXTRACE_INFO:
1401 return tool->auxtrace_info(session, event);
1402 case PERF_RECORD_AUXTRACE:
1403 /* setup for reading amidst mmap */
1404 lseek(fd, file_offset + event->header.size, SEEK_SET);
1405 return tool->auxtrace(session, event);
1406 case PERF_RECORD_AUXTRACE_ERROR:
1407 perf_session__auxtrace_error_inc(session, event);
1408 return tool->auxtrace_error(session, event);
1409 case PERF_RECORD_THREAD_MAP:
1410 return tool->thread_map(session, event);
1411 case PERF_RECORD_CPU_MAP:
1412 return tool->cpu_map(session, event);
1413 case PERF_RECORD_STAT_CONFIG:
1414 return tool->stat_config(session, event);
1415 case PERF_RECORD_STAT:
1416 return tool->stat(session, event);
1417 case PERF_RECORD_STAT_ROUND:
1418 return tool->stat_round(session, event);
1419 case PERF_RECORD_TIME_CONV:
1420 session->time_conv = event->time_conv;
1421 return tool->time_conv(session, event);
1422 case PERF_RECORD_HEADER_FEATURE:
1423 return tool->feature(session, event);
1429 int perf_session__deliver_synth_event(struct perf_session *session,
1430 union perf_event *event,
1431 struct perf_sample *sample)
1433 struct perf_evlist *evlist = session->evlist;
1434 struct perf_tool *tool = session->tool;
1436 events_stats__inc(&evlist->stats, event->header.type);
1438 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1439 return perf_session__process_user_event(session, event, 0);
1441 return machines__deliver_event(&session->machines, evlist, event, sample, tool, 0);
1444 static void event_swap(union perf_event *event, bool sample_id_all)
1446 perf_event__swap_op swap;
1448 swap = perf_event__swap_ops[event->header.type];
1450 swap(event, sample_id_all);
1453 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
1454 void *buf, size_t buf_sz,
1455 union perf_event **event_ptr,
1456 struct perf_sample *sample)
1458 union perf_event *event;
1459 size_t hdr_sz, rest;
1462 if (session->one_mmap && !session->header.needs_swap) {
1463 event = file_offset - session->one_mmap_offset +
1464 session->one_mmap_addr;
1465 goto out_parse_sample;
1468 if (perf_data__is_pipe(session->data))
1471 fd = perf_data__fd(session->data);
1472 hdr_sz = sizeof(struct perf_event_header);
1474 if (buf_sz < hdr_sz)
1477 if (lseek(fd, file_offset, SEEK_SET) == (off_t)-1 ||
1478 readn(fd, buf, hdr_sz) != (ssize_t)hdr_sz)
1481 event = (union perf_event *)buf;
1483 if (session->header.needs_swap)
1484 perf_event_header__bswap(&event->header);
1486 if (event->header.size < hdr_sz || event->header.size > buf_sz)
1489 rest = event->header.size - hdr_sz;
1491 if (readn(fd, buf, rest) != (ssize_t)rest)
1494 if (session->header.needs_swap)
1495 event_swap(event, perf_evlist__sample_id_all(session->evlist));
1499 if (sample && event->header.type < PERF_RECORD_USER_TYPE_START &&
1500 perf_evlist__parse_sample(session->evlist, event, sample))
1508 static s64 perf_session__process_event(struct perf_session *session,
1509 union perf_event *event, u64 file_offset)
1511 struct perf_evlist *evlist = session->evlist;
1512 struct perf_tool *tool = session->tool;
1515 if (session->header.needs_swap)
1516 event_swap(event, perf_evlist__sample_id_all(evlist));
1518 if (event->header.type >= PERF_RECORD_HEADER_MAX)
1521 events_stats__inc(&evlist->stats, event->header.type);
1523 if (event->header.type >= PERF_RECORD_USER_TYPE_START)
1524 return perf_session__process_user_event(session, event, file_offset);
1526 if (tool->ordered_events) {
1527 u64 timestamp = -1ULL;
1529 ret = perf_evlist__parse_sample_timestamp(evlist, event, ×tamp);
1530 if (ret && ret != -1)
1533 ret = perf_session__queue_event(session, event, timestamp, file_offset);
1538 return perf_session__deliver_event(session, event, tool, file_offset);
1541 void perf_event_header__bswap(struct perf_event_header *hdr)
1543 hdr->type = bswap_32(hdr->type);
1544 hdr->misc = bswap_16(hdr->misc);
1545 hdr->size = bswap_16(hdr->size);
1548 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
1550 return machine__findnew_thread(&session->machines.host, -1, pid);
1554 * Threads are identified by pid and tid, and the idle task has pid == tid == 0.
1555 * So here a single thread is created for that, but actually there is a separate
1556 * idle task per cpu, so there should be one 'struct thread' per cpu, but there
1557 * is only 1. That causes problems for some tools, requiring workarounds. For
1558 * example get_idle_thread() in builtin-sched.c, or thread_stack__per_cpu().
1560 int perf_session__register_idle_thread(struct perf_session *session)
1562 struct thread *thread;
1565 thread = machine__findnew_thread(&session->machines.host, 0, 0);
1566 if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
1567 pr_err("problem inserting idle task.\n");
1571 if (thread == NULL || thread__set_namespaces(thread, 0, NULL)) {
1572 pr_err("problem inserting idle task.\n");
1576 /* machine__findnew_thread() got the thread, so put it */
1577 thread__put(thread);
1582 perf_session__warn_order(const struct perf_session *session)
1584 const struct ordered_events *oe = &session->ordered_events;
1585 struct perf_evsel *evsel;
1586 bool should_warn = true;
1588 evlist__for_each_entry(session->evlist, evsel) {
1589 if (evsel->attr.write_backward)
1590 should_warn = false;
1595 if (oe->nr_unordered_events != 0)
1596 ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
1599 static void perf_session__warn_about_errors(const struct perf_session *session)
1601 const struct events_stats *stats = &session->evlist->stats;
1603 if (session->tool->lost == perf_event__process_lost &&
1604 stats->nr_events[PERF_RECORD_LOST] != 0) {
1605 ui__warning("Processed %d events and lost %d chunks!\n\n"
1606 "Check IO/CPU overload!\n\n",
1607 stats->nr_events[0],
1608 stats->nr_events[PERF_RECORD_LOST]);
1611 if (session->tool->lost_samples == perf_event__process_lost_samples) {
1614 drop_rate = (double)stats->total_lost_samples /
1615 (double) (stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples);
1616 if (drop_rate > 0.05) {
1617 ui__warning("Processed %" PRIu64 " samples and lost %3.2f%%!\n\n",
1618 stats->nr_events[PERF_RECORD_SAMPLE] + stats->total_lost_samples,
1623 if (session->tool->aux == perf_event__process_aux &&
1624 stats->total_aux_lost != 0) {
1625 ui__warning("AUX data lost %" PRIu64 " times out of %u!\n\n",
1626 stats->total_aux_lost,
1627 stats->nr_events[PERF_RECORD_AUX]);
1630 if (session->tool->aux == perf_event__process_aux &&
1631 stats->total_aux_partial != 0) {
1632 bool vmm_exclusive = false;
1634 (void)sysfs__read_bool("module/kvm_intel/parameters/vmm_exclusive",
1637 ui__warning("AUX data had gaps in it %" PRIu64 " times out of %u!\n\n"
1638 "Are you running a KVM guest in the background?%s\n\n",
1639 stats->total_aux_partial,
1640 stats->nr_events[PERF_RECORD_AUX],
1642 "\nReloading kvm_intel module with vmm_exclusive=0\n"
1643 "will reduce the gaps to only guest's timeslices." :
1647 if (stats->nr_unknown_events != 0) {
1648 ui__warning("Found %u unknown events!\n\n"
1649 "Is this an older tool processing a perf.data "
1650 "file generated by a more recent tool?\n\n"
1651 "If that is not the case, consider "
1652 "reporting to linux-kernel@vger.kernel.org.\n\n",
1653 stats->nr_unknown_events);
1656 if (stats->nr_unknown_id != 0) {
1657 ui__warning("%u samples with id not present in the header\n",
1658 stats->nr_unknown_id);
1661 if (stats->nr_invalid_chains != 0) {
1662 ui__warning("Found invalid callchains!\n\n"
1663 "%u out of %u events were discarded for this reason.\n\n"
1664 "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
1665 stats->nr_invalid_chains,
1666 stats->nr_events[PERF_RECORD_SAMPLE]);
1669 if (stats->nr_unprocessable_samples != 0) {
1670 ui__warning("%u unprocessable samples recorded.\n"
1671 "Do you have a KVM guest running and not using 'perf kvm'?\n",
1672 stats->nr_unprocessable_samples);
1675 perf_session__warn_order(session);
1677 events_stats__auxtrace_error_warn(stats);
1679 if (stats->nr_proc_map_timeout != 0) {
1680 ui__warning("%d map information files for pre-existing threads were\n"
1681 "not processed, if there are samples for addresses they\n"
1682 "will not be resolved, you may find out which are these\n"
1683 "threads by running with -v and redirecting the output\n"
1685 "The time limit to process proc map is too short?\n"
1686 "Increase it by --proc-map-timeout\n",
1687 stats->nr_proc_map_timeout);
1691 static int perf_session__flush_thread_stack(struct thread *thread,
1692 void *p __maybe_unused)
1694 return thread_stack__flush(thread);
1697 static int perf_session__flush_thread_stacks(struct perf_session *session)
1699 return machines__for_each_thread(&session->machines,
1700 perf_session__flush_thread_stack,
1704 volatile int session_done;
1706 static int __perf_session__process_pipe_events(struct perf_session *session)
1708 struct ordered_events *oe = &session->ordered_events;
1709 struct perf_tool *tool = session->tool;
1710 int fd = perf_data__fd(session->data);
1711 union perf_event *event;
1712 uint32_t size, cur_size = 0;
1719 perf_tool__fill_defaults(tool);
1722 cur_size = sizeof(union perf_event);
1724 buf = malloc(cur_size);
1727 ordered_events__set_copy_on_queue(oe, true);
1730 err = readn(fd, event, sizeof(struct perf_event_header));
1735 pr_err("failed to read event header\n");
1739 if (session->header.needs_swap)
1740 perf_event_header__bswap(&event->header);
1742 size = event->header.size;
1743 if (size < sizeof(struct perf_event_header)) {
1744 pr_err("bad event header size\n");
1748 if (size > cur_size) {
1749 void *new = realloc(buf, size);
1751 pr_err("failed to allocate memory to read event\n");
1759 p += sizeof(struct perf_event_header);
1761 if (size - sizeof(struct perf_event_header)) {
1762 err = readn(fd, p, size - sizeof(struct perf_event_header));
1765 pr_err("unexpected end of event stream\n");
1769 pr_err("failed to read event data\n");
1774 if ((skip = perf_session__process_event(session, event, head)) < 0) {
1775 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1776 head, event->header.size, event->header.type);
1786 if (!session_done())
1789 /* do the final flush for ordered samples */
1790 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1793 err = auxtrace__flush_events(session, tool);
1796 err = perf_session__flush_thread_stacks(session);
1800 perf_session__warn_about_errors(session);
1801 ordered_events__free(&session->ordered_events);
1802 auxtrace__free_events(session);
1806 static union perf_event *
1807 fetch_mmaped_event(struct perf_session *session,
1808 u64 head, size_t mmap_size, char *buf)
1810 union perf_event *event;
1813 * Ensure we have enough space remaining to read
1814 * the size of the event in the headers.
1816 if (head + sizeof(event->header) > mmap_size)
1819 event = (union perf_event *)(buf + head);
1821 if (session->header.needs_swap)
1822 perf_event_header__bswap(&event->header);
1824 if (head + event->header.size > mmap_size) {
1825 /* We're not fetching the event so swap back again */
1826 if (session->header.needs_swap)
1827 perf_event_header__bswap(&event->header);
1835 * On 64bit we can mmap the data file in one go. No need for tiny mmap
1836 * slices. On 32bit we use 32MB.
1838 #if BITS_PER_LONG == 64
1839 #define MMAP_SIZE ULLONG_MAX
1842 #define MMAP_SIZE (32 * 1024 * 1024ULL)
1843 #define NUM_MMAPS 128
1853 reader__process_events(struct reader *rd, struct perf_session *session,
1854 struct ui_progress *prog)
1856 u64 data_size = rd->data_size;
1857 u64 head, page_offset, file_offset, file_pos, size;
1858 int err = 0, mmap_prot, mmap_flags, map_idx = 0;
1860 char *buf, *mmaps[NUM_MMAPS];
1861 union perf_event *event;
1864 page_offset = page_size * (rd->data_offset / page_size);
1865 file_offset = page_offset;
1866 head = rd->data_offset - page_offset;
1868 ui_progress__init_size(prog, data_size, "Processing events...");
1870 data_size += rd->data_offset;
1872 mmap_size = MMAP_SIZE;
1873 if (mmap_size > data_size) {
1874 mmap_size = data_size;
1875 session->one_mmap = true;
1878 memset(mmaps, 0, sizeof(mmaps));
1880 mmap_prot = PROT_READ;
1881 mmap_flags = MAP_SHARED;
1883 if (session->header.needs_swap) {
1884 mmap_prot |= PROT_WRITE;
1885 mmap_flags = MAP_PRIVATE;
1888 buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, rd->fd,
1890 if (buf == MAP_FAILED) {
1891 pr_err("failed to mmap file\n");
1895 mmaps[map_idx] = buf;
1896 map_idx = (map_idx + 1) & (ARRAY_SIZE(mmaps) - 1);
1897 file_pos = file_offset + head;
1898 if (session->one_mmap) {
1899 session->one_mmap_addr = buf;
1900 session->one_mmap_offset = file_offset;
1904 event = fetch_mmaped_event(session, head, mmap_size, buf);
1906 if (mmaps[map_idx]) {
1907 munmap(mmaps[map_idx], mmap_size);
1908 mmaps[map_idx] = NULL;
1911 page_offset = page_size * (head / page_size);
1912 file_offset += page_offset;
1913 head -= page_offset;
1917 size = event->header.size;
1919 if (size < sizeof(struct perf_event_header) ||
1920 (skip = perf_session__process_event(session, event, file_pos)) < 0) {
1921 pr_err("%#" PRIx64 " [%#x]: failed to process type: %d\n",
1922 file_offset + head, event->header.size,
1923 event->header.type);
1934 ui_progress__update(prog, size);
1939 if (file_pos < data_size)
1946 static int __perf_session__process_events(struct perf_session *session)
1948 struct reader rd = {
1949 .fd = perf_data__fd(session->data),
1950 .data_size = session->header.data_size,
1951 .data_offset = session->header.data_offset,
1953 struct ordered_events *oe = &session->ordered_events;
1954 struct perf_tool *tool = session->tool;
1955 struct ui_progress prog;
1958 perf_tool__fill_defaults(tool);
1960 if (rd.data_size == 0)
1963 ui_progress__init_size(&prog, rd.data_size, "Processing events...");
1965 err = reader__process_events(&rd, session, &prog);
1968 /* do the final flush for ordered samples */
1969 err = ordered_events__flush(oe, OE_FLUSH__FINAL);
1972 err = auxtrace__flush_events(session, tool);
1975 err = perf_session__flush_thread_stacks(session);
1977 ui_progress__finish();
1979 perf_session__warn_about_errors(session);
1981 * We may switching perf.data output, make ordered_events
1984 ordered_events__reinit(&session->ordered_events);
1985 auxtrace__free_events(session);
1986 session->one_mmap = false;
1990 int perf_session__process_events(struct perf_session *session)
1992 if (perf_session__register_idle_thread(session) < 0)
1995 if (perf_data__is_pipe(session->data))
1996 return __perf_session__process_pipe_events(session);
1998 return __perf_session__process_events(session);
2001 bool perf_session__has_traces(struct perf_session *session, const char *msg)
2003 struct perf_evsel *evsel;
2005 evlist__for_each_entry(session->evlist, evsel) {
2006 if (evsel->attr.type == PERF_TYPE_TRACEPOINT)
2010 pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg);
2014 int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name, u64 addr)
2017 struct ref_reloc_sym *ref;
2020 ref = zalloc(sizeof(struct ref_reloc_sym));
2024 ref->name = strdup(symbol_name);
2025 if (ref->name == NULL) {
2030 bracket = strchr(ref->name, ']');
2036 kmap = map__kmap(map);
2038 kmap->ref_reloc_sym = ref;
2043 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
2045 return machines__fprintf_dsos(&session->machines, fp);
2048 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
2049 bool (skip)(struct dso *dso, int parm), int parm)
2051 return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
2054 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
2057 const char *msg = "";
2059 if (perf_header__has_feat(&session->header, HEADER_AUXTRACE))
2060 msg = " (excludes AUX area (e.g. instruction trace) decoded / synthesized events)";
2062 ret = fprintf(fp, "\nAggregated stats:%s\n", msg);
2064 ret += events_stats__fprintf(&session->evlist->stats, fp);
2068 size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
2071 * FIXME: Here we have to actually print all the machines in this
2072 * session, not just the host...
2074 return machine__fprintf(&session->machines.host, fp);
2077 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
2080 struct perf_evsel *pos;
2082 evlist__for_each_entry(session->evlist, pos) {
2083 if (pos->attr.type == type)
2089 int perf_session__cpu_bitmap(struct perf_session *session,
2090 const char *cpu_list, unsigned long *cpu_bitmap)
2093 struct cpu_map *map;
2095 for (i = 0; i < PERF_TYPE_MAX; ++i) {
2096 struct perf_evsel *evsel;
2098 evsel = perf_session__find_first_evtype(session, i);
2102 if (!(evsel->attr.sample_type & PERF_SAMPLE_CPU)) {
2103 pr_err("File does not contain CPU events. "
2104 "Remove -C option to proceed.\n");
2109 map = cpu_map__new(cpu_list);
2111 pr_err("Invalid cpu_list\n");
2115 for (i = 0; i < map->nr; i++) {
2116 int cpu = map->map[i];
2118 if (cpu >= MAX_NR_CPUS) {
2119 pr_err("Requested CPU %d too large. "
2120 "Consider raising MAX_NR_CPUS\n", cpu);
2121 goto out_delete_map;
2124 set_bit(cpu, cpu_bitmap);
2134 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
2137 if (session == NULL || fp == NULL)
2140 fprintf(fp, "# ========\n");
2141 perf_header__fprintf_info(session, fp, full);
2142 fprintf(fp, "# ========\n#\n");
2146 int __perf_session__set_tracepoints_handlers(struct perf_session *session,
2147 const struct perf_evsel_str_handler *assocs,
2150 struct perf_evsel *evsel;
2154 for (i = 0; i < nr_assocs; i++) {
2156 * Adding a handler for an event not in the session,
2159 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, assocs[i].name);
2164 if (evsel->handler != NULL)
2166 evsel->handler = assocs[i].handler;
2174 int perf_event__process_id_index(struct perf_session *session,
2175 union perf_event *event)
2177 struct perf_evlist *evlist = session->evlist;
2178 struct id_index_event *ie = &event->id_index;
2179 size_t i, nr, max_nr;
2181 max_nr = (ie->header.size - sizeof(struct id_index_event)) /
2182 sizeof(struct id_index_entry);
2188 fprintf(stdout, " nr: %zu\n", nr);
2190 for (i = 0; i < nr; i++) {
2191 struct id_index_entry *e = &ie->entries[i];
2192 struct perf_sample_id *sid;
2195 fprintf(stdout, " ... id: %"PRIu64, e->id);
2196 fprintf(stdout, " idx: %"PRIu64, e->idx);
2197 fprintf(stdout, " cpu: %"PRId64, e->cpu);
2198 fprintf(stdout, " tid: %"PRId64"\n", e->tid);
2201 sid = perf_evlist__id2sid(evlist, e->id);
2211 int perf_event__synthesize_id_index(struct perf_tool *tool,
2212 perf_event__handler_t process,
2213 struct perf_evlist *evlist,
2214 struct machine *machine)
2216 union perf_event *ev;
2217 struct perf_evsel *evsel;
2218 size_t nr = 0, i = 0, sz, max_nr, n;
2221 pr_debug2("Synthesizing id index\n");
2223 max_nr = (UINT16_MAX - sizeof(struct id_index_event)) /
2224 sizeof(struct id_index_entry);
2226 evlist__for_each_entry(evlist, evsel)
2229 n = nr > max_nr ? max_nr : nr;
2230 sz = sizeof(struct id_index_event) + n * sizeof(struct id_index_entry);
2235 ev->id_index.header.type = PERF_RECORD_ID_INDEX;
2236 ev->id_index.header.size = sz;
2237 ev->id_index.nr = n;
2239 evlist__for_each_entry(evlist, evsel) {
2242 for (j = 0; j < evsel->ids; j++) {
2243 struct id_index_entry *e;
2244 struct perf_sample_id *sid;
2247 err = process(tool, ev, NULL, machine);
2254 e = &ev->id_index.entries[i++];
2256 e->id = evsel->id[j];
2258 sid = perf_evlist__id2sid(evlist, e->id);
2270 sz = sizeof(struct id_index_event) + nr * sizeof(struct id_index_entry);
2271 ev->id_index.header.size = sz;
2272 ev->id_index.nr = nr;
2274 err = process(tool, ev, NULL, machine);